CN207424224U - A kind of device for possessing on-line monitoring exchange and scurrying into DC power system function - Google Patents
A kind of device for possessing on-line monitoring exchange and scurrying into DC power system function Download PDFInfo
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- CN207424224U CN207424224U CN201721459891.2U CN201721459891U CN207424224U CN 207424224 U CN207424224 U CN 207424224U CN 201721459891 U CN201721459891 U CN 201721459891U CN 207424224 U CN207424224 U CN 207424224U
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Abstract
The utility model discloses a kind of devices for possessing on-line monitoring exchange and scurrying into DC power system function, by touch display panel, data processing plate, power panel is formed, power panel welded and installed is on data processing plate, touch display panel, data processing plate is connected by conducting wire and is mounted in subassembly wrapper, data processing plate is by one-chip computer module, AD sampling modules, analog signal processing module, RS485 communication modules, RS232 communication modules, relay output control module forms, data processing plate has DC bus-bar voltage interface, RS485 communication interfaces, RS232 communication interfaces, relay output interface.The utility model can monitor the operating status of dc bus in real time, including：Exchange is scurried into, DC voltage, and foundation is provided for the maintenance and maintenance of straight-flow system.
Description
Technical field
Possess on-line monitoring exchange the utility model is related to energy monitoring apparatus field, especially one kind and scurry into DC power supply
The device of system function.
Background technology
DC power supply is the important component of electric system, and AC power mainly is changed into relay by fairing protects
The DC power supply that shield and automaton need, and form a mutually spare straight-flow system with accumulator group.With change
The intelligentized popularization in power station has higher requirement to the reliability of straight-flow system, influences the factor of straight-flow system stability very
It is more, mainly there are short circuit, DC earthing, exchange to scurry into DC loop etc..Wherein " DC loop is scurried into exchange " is thus caused sets
The failures such as standby damage, the tripping of protection equipment, malfunction, DC earthing happen occasionally, and bring and seriously affect to substation safety operation.
For the domestic power grid accident that exchange repeatedly occurs and scurries into DC power system and occurs, in March, 2012 state's household electrical appliances
What net company formulated《18 great anti-accident measures of power grid of State Grid Corporation of China》In Section 5 " prevent substation full cut-off electricity
And Very Important Person power outage " in clearly propose on the basis of original Insulation Inspection Device for Direct-Current System, it is desirable that increase hand over
Flee the survey note and warning function into DC Line Fault.
Utility model content
To improve the reliability of straight-flow system, DC power system thus caused equipment damage, guarantor are scurried into for exchange
Protect the failures such as equipment tripping, malfunction, DC earthing, the utility model provide exchange can be scurried into real time DC power system into
Row on-line monitoring realizes that detection alarm, DC voltage monitoring function are scurried into exchange, and real-time display current measurement value is different when occurring
Normal situation alarm, records fault moment and fault waveform, provides dry contact output port and RS485 PORT COMs, monitoring letter
Breath is uploaded to backstage host computer.The utility model can not change original DC earthing logging, and the safety for improving power grid is transported
Row plays larger effect in the reliability of DC power supply, be a kind of raising grid automation level, ensure safe operation and
The preferable intelligent device of exact failure positioning.
Technical solution is used by the utility model solves its technical problem：
A kind of device for possessing on-line monitoring exchange and scurrying into DC power system, it is characterised in that by data processing plate, touch
Display board, power panel composition are touched, data processing plate, touch display panel, power panel are mounted in subassembly wrapper, and power panel is switch electricity
Source module, power panel power input and 220V DC power supplies are connected by conducting wire.
The touch display panel is input power direct current 12V, and the Real-time Monitoring Data of display data processing board transmission is set
The external communication of data processing plate scurries into voltage protection threshold value and busbar voltage protection threshold value.
The power panel is input power direct current 220V, is exported as the switch power module of direct current 12V.
The data processing plate data processing plate by one-chip computer module, AD sampling modules, analog signal processing module,
RS485 communication modules, RS232 communication modules, relay output control module composition, one-chip computer module main control chip are
It is connected between STM32F107, AD sampling circuit and one-chip computer module by data/address bus, AD sampling module main control chip models are
It is connected between AD7606, RS485 communication module and one-chip computer module by data cable, RS485 communication module main control chip models
It is ADM2587E, is connected between RS232 communication modules and one-chip computer module by data cable, RS232 communication module main control chips
Model is MAX3232E, in work, analog signal processing module, AD sampling modules, one-chip computer module be responsible for handle signal acquisition,
Analysis, storage and teletransmission, treated, and data are transferred to touch display panel by RS232 interface, are transferred to by RS485 interfaces
Distant place background computer, communication protocol meet MODBUS agreements.
The data processing plate AD sampling modules, AD7606 chips are built-in 16, the input of 200ksps bipolaritys is synchronously adopted
8 passage A/D chips of sample, sampling precision is high, which mainly samples the positive voltage-to-ground of busbar, and busbar bears voltage-to-ground, and busbar is just
Voltage is scurried into exchange, and busbar bears exchange and scurries into voltage.A/D chip is after high-speed sampling, by analog-signal transitions into digital signal,
By parallel bus, the data high-speed of acquisition is passed into one-chip computer module, one-chip computer module storage, calculating, analysis collect
Data.
The data processing template die intends signal processing module, and analog signal processing module is divided into exchange and scurries into DC detecting electricity
Road and direct current bus voltage detecting circuit, exchange are scurried into DC detection circuit, and dc bus is examined in real time by capacitance stopping direct current
The AC signal on dc bus is surveyed, in direct current bus voltage detecting circuit, busbar passes through resistance pressure-dividing network, and detection is female in real time
D. c. voltage signal on line.
The utility model advantageous effect is：The utility model can monitor in real time the positive voltage-to-ground of DC bus-bar voltage, busbar,
The positive and negative voltage-to-ground of busbar, busbar be orthogonal to flee to bear exchange into voltage, busbar and scurries into voltage, data processing plate to each analog quantity into
Row acquisition is calculated, analyzed, after storage, is transferred to touch display panel displaying data in real-time by RS232 interface, is connect by RS485
Background computer is defeated by oral instructions, is crossed protection threshold value when detecting data, is alarmed and record fault moment, waveform, provide stem grafting
Point output port.Based on application prospect that is above-mentioned, having had.
Description of the drawings
The utility model is described further with reference to the accompanying drawings and examples.
Fig. 1 is the block diagram of the utility model.
Fig. 2 is the utility model data processing harden structure block diagram.
Specific embodiment
Fig. 1, shown in 2, a kind of device for possessing on-line monitoring exchange and scurrying into DC power system function, by data processing
Plate 1, touch display panel 3, power panel 2 are formed, and 2 welded and installed of power panel is on data processing plate 1, at touch display panel 3, data
Reason plate 2 connect by conducting wire and is mounted in subassembly wrapper, and power panel 2 is switch power module, 2 power input of power panel with
220V DC power supplies are connected by conducting wire, and data processing plate 1 includes one-chip computer module 4, AD sampling modules 6, relay output mould
Block 7, analog signal processing module 9,10,11,12.It is connected between AD sampling modules and one-chip computer module by data/address bus, AD
Sampling module main control chip model is not AD7606, and in work, analog signal processing module is responsible for conversion acquisition signal, AD samplings
Module is responsible for gathering analog signal, and one-chip computer module is responsible for calculating, analyzes, stores the data that AD sampling modules transmit, when
Detect that external communication scurries into voltage and is less than set protection threshold value more than set protection threshold value or busbar voltage,
One-chip computer module control relay module control 14 output alarm signal of relay, touch is transmitted data to by RS232 interface
The currently monitored data of display board real-time display, by RS485 interface transmission datas to background computer.
Fig. 1, shown in 2, it is positive and negative right that the utility model monitors the positive voltage-to-ground of DC bus-bar voltage, busbar, busbar in real time
Ground voltage, busbar be orthogonal to flee to bear exchange into voltage, busbar and scurries into voltage, and data processing plate 1 is gathered, calculates, analyzes, stored
Afterwards, data are transmitted to touch display panel 3 by RS232 interface, distally data are transmitted on backstage 8 by RS485 interfaces.By touching
It touches display board 3 and protection threshold value is set to data processing plate 1, when detecting that external signal crosses set protection threshold value,
14 output alarm signal of relay.Based on above-mentioned, so with good application prospect.
It should be noted that the present embodiment be the utility model preferred embodiments, be not intended to limit the utility model, it is all
Do any modification, equivalent substitution, improvement and etc. in the present embodiment spirit, should be included in the scope of protection of the utility model it
It is interior.
Claims (8)
1. a kind of device for possessing on-line monitoring exchange and scurrying into DC power system function, it is characterised in that：It is shown by touching
Plate, data processing plate, power panel are formed, and the power panel, data processing plate, touch display panel are mounted in subassembly wrapper, described
Power panel is switch power module, and the power panel power input is connected with 220V DC power supplies by conducting wire.
2. the device according to claim 1 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The touch display panel is input direct-current 12V, is connected by conducting wire with the data processing plate；In work, real-time display number
According to the Real-time Monitoring Data that processing board is transmitted, the external communication of data processing plate is set to scurry into voltage protection threshold value and busbar electricity
Pressure protection threshold value.
3. the device according to claim 1 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The power panel is input power direct current 220V, is exported as the switch power module of direct current 12V.
4. the device according to claim 1 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The data processing plate is communicated back by single-chip minimum system, AD sampling circuits, analog signal processing circuit, RS485
Road, RS232 order circuits, relay output control circuit composition；Lead between the AD sampling circuits and single-chip minimum system
Data/address bus connection is crossed, is connected between the RS485 order circuits and the single-chip minimum system by data cable, it is described
It is connected between RS232 order circuits and the single-chip minimum system by data cable；In work, the analog signal processing is returned
Road is responsible for converting external voltage signal, and the AD sampling circuits, single-chip minimum system are responsible for handling signal acquisition, analyze, deposit
Storage and teletransmission, data that treated are transferred to touch display panel by the RS232 order circuits interface, pass through the RS485
Order circuit interface is transferred to distant place background computer, and the RS485 order circuits stipulations meet MODBUS agreements.
5. the device according to claim 4 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The AD sampling circuits main control chip model is AD7606；The single-chip minimum system main control chip is STM32F107；
The RS485 order circuits main control chip model is ADM2587E；The RS232 order circuits main control chip model is
MAX3232E。
6. the device according to claim 4 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The AD sampling circuits of the data processing plate, AD7606 chips are built-in 16,200ksps bipolaritys input synchronized sampling
8 passage A/D chips.
7. the device according to claim 6 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The 8 passage A/D chip samples the positive voltage-to-ground of busbar, and busbar bears voltage-to-ground, and busbar is orthogonal to flee into voltage, and busbar is born
Voltage is scurried into exchange；The 8 passage A/D chip is after high-speed sampling, by analog-signal transitions into digital signal, by parallel total
The data high-speed of acquisition is passed to one-chip computer module by line, and one-chip computer module storage calculates, the data that analysis collects.
8. the device according to claim 4 for possessing on-line monitoring exchange and scurrying into DC power system function, feature exist
In：The analog signal processing circuit is divided into exchange and scurries into DC detection circuit and direct current bus voltage detecting circuit, the friendship
It is dc bus by capacitance stopping direct current voltage to flee into DC detection circuit, detects the AC signal on dc bus in real time,
In the direct current bus voltage detecting circuit, dc bus detects the DC voltage on busbar in real time by resistance pressure-dividing network
Signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721459891.2U CN207424224U (en) | 2017-11-03 | 2017-11-03 | A kind of device for possessing on-line monitoring exchange and scurrying into DC power system function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721459891.2U CN207424224U (en) | 2017-11-03 | 2017-11-03 | A kind of device for possessing on-line monitoring exchange and scurrying into DC power system function |
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| Publication Number | Publication Date |
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| CN207424224U true CN207424224U (en) | 2018-05-29 |
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| CN201721459891.2U Active CN207424224U (en) | 2017-11-03 | 2017-11-03 | A kind of device for possessing on-line monitoring exchange and scurrying into DC power system function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447332A (en) * | 2020-02-19 | 2020-07-24 | 广州广哈通信股份有限公司 | Scheduling terminal mainboard and scheduling terminal |
| CN112748363A (en) * | 2020-12-24 | 2021-05-04 | 安徽鑫龙自动化有限公司 | Alternating current fleeing testing device for direct current system |
-
2017
- 2017-11-03 CN CN201721459891.2U patent/CN207424224U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447332A (en) * | 2020-02-19 | 2020-07-24 | 广州广哈通信股份有限公司 | Scheduling terminal mainboard and scheduling terminal |
| CN112748363A (en) * | 2020-12-24 | 2021-05-04 | 安徽鑫龙自动化有限公司 | Alternating current fleeing testing device for direct current system |
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